Hoisting apparatus.



U. H. HAETWIG.

HOISTING APPARATUS. APPLICATION FILED D30. 27, 1907.

932,468, Patented Aug. .31, 1909.

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, lev- .laterill PATENT ()EFXGE.

CHRISTIAN Ti. HAREWIG, OF NEW YORK, N. "2., ASSIGNOE OF ONE-HALF TO BIRGER EKENBERG, OF EOCKVILLE CENTER, NEW YORK.

HOISTING A?PABATUS.

Specification of Letters Patent.

Application filed December 27, 1907.

Patented Aug, 31, 1909.

Serial No. 408,328.

T (ZZZ e f/10m it c r/(1, 2,! concern:

Be it known that l, Cuiusirmiv ll. llART- wio, a citizen of the United i s, and a resident of Cone; island, in the city of New Y rlr, county of Kings, and State of New York. United States of America, have inented certain new and useful improvements in vlleisting Apparatus, of which the following is a specification.

' invention relates to improvements in hoisting apparatus and its object is to provide a si epic and ellicicnt construction and arrangementof parts and improve upon devices of this class.

I will describe my invention in the following specificaticn and point out the novel features thereof ii. claims.

Referring to the drawings, l igure l is a side elevation of a hoisting apparatus and its associated p 'ts made according to my invention and illustratin the general arrangement of such an installation] Fig. 2 is a side elevation and F 3 is plan view of a hoisting carriage or trolley which i use in carr vi out m; invention. Fig. is a diagrammatic re 'irescntatio of a preferred arrangement of hoistii'ig drums, counterweights and ropes which l have ..-.v\ ented. 5 is similar view of another ar oment of similar part s. 6 is plan vi partlv in section, of a portion of the mechanism of the hoisting carriage or trolley.

. l responding parts in all of the figures an l the specification.

10 designates a foundation. upon which. the apparatus is installed.

ll is a frame of structural iron or-other suitable material which in this case 0011"- prises two towers 112 and 13 connected togeth r h a bridge l t which supports a trol- .cl-z 15. "the towers may he supported upon trucks on rails 16 and 17 a well-known manner so that the whole ar rangcment may be moved back and forth Any other manner of supporting the tracl: ma;w be used as this constitutes no part of the invention.

20 designates a hoisting or trolle r wl comprises a frame 2i. provided with wheels which are adapted to run upon the track 15.

and 2a are a pair of shafts mounted lat-- erallv upon the frame 2]. Supported upon the shaft 23 are a pair of hoisting drums and 26. A similar pair of hoisting drums 27 and are supported upon the shaft 24.

3O designates a motor which, through train of gears 31. is mechanically connected with a pair of spur gears 32 and 33 weich are mounted, respectively, upon the shafts 23 and 24-. The gear 32 is rigidly connected with the hoisting drum 25 or may be an integral part thereof, and the gear 38 is similarly connected with the hoisting drum 27. it is, evident, then, that the motion of the motor is transmitted to the drums 26 and 27 at a reduced rate of speed and that these drums rotate in opposite directions whenever the motor is rotated, and that this rotation of the drums mav be reversed b reversing the direction of the rotation of the motor.

A brake-wheel 26 is connected with or is an integral part of the drum 26, and a similar brake-wheel 28 is associated with the drum 28. Brakes may be used in connection with these brake-wheels to hold the drums 26 and 28 from rotation during a part of the operation.

29 designates a conical friction member which is connected with and projects from the spur gear 32 and is adapted to fit into an opening in the side of the brake-wheel 26 as may be clearly seen from Fig. 6. A similar friction member is connected with the gear wheel and is arranged to engage with the brake-wheel 28 and its connected drum 28. The parts a e so arranged that when the brake-wheels above mentioned are released the drums 26 and 28 are pushed against the friction members so that they rotate in unison with the drums 25 and 27. As mechanism for accomplishing the above results is well known I have not illustrated it in the drawings.

34 designates motor which is mounted upon the frame 21. A worm-gear I5 upon the shaft of this motor is arranged to mesh with a gear wheel 36 which is mounted upon the journal 22 to which two of the wheels 22 are attached.

40 designates a hoisting bucket which may be constructed of two sections or parts 41 and 42 pivoted together at 43. Segmental gears ll and 42" are connected, respectively, with the two sections l1 and 12 of the bucket. A pair of rods 44 and 45 are pivotally connected with the outer ends of the sections 41 and 42. These rods are connected together by a cross-bar 46 to the outer ends of which the ends of the two hoisting ropes 47 are connected. 48 designates another pair of ropes which are used for closing the sections of the bucket and assisting in hoisting it. The hoisting ropes 47 are connected with the drums 26 and 28 so that when the latter are rotated in one direction or the other the bucket will be raised or lowcred. The closing ropes 48 are similarly attached to the drums and 27.

Before proceeding with the description of the invention I will briefly point out the operation of so much of the apparatus as has already been described.

It may be seen that the rotation of the hoisting drums is controlled by the movement of the motor and this, in turn, may be controlled by any of the well-known arrangements from a cab 2O which is sus pended from and supported by the frame 21. The brakes and clutches for controlling the rotation of the drums 26 and 28 relative to that of the drums 25 and 27 may also be controlled by an operator from the cab 20. The above operation is for the purpose of raising and lowering the bucket and causing it to be opened and closed at the desired points of its travel. It is believed to be unnecessary to give more than the above description of this operation as it is well-known in the art and may be accomplished in many ways.

The motor 34, which may also be controlled from the cab 20, is arranged to rotate two of the wheels 22 in one direction or another to cause the hoisting trolley or carriage to travel in one. direction or another along the track 15. The connecting gear between the motor 34 and the journal 22 is preferably a worm and gear of comparatively low pitch so that the motor cannot be driven back by the journal. This arrange ment is made so that the hoisting carriage will stand at any desired point when the power is shut off from the motor 34 and avoids the necessity of a brake for this pur pose. This operation is also one in too common use to need further description.

Referring now to Fig. 4 I will describe the arrangement of ropes and counterweights which I have invented for the purpose of improving upon the apparatus above described and adding to its eflieiency. The ends of the bucketclosi11g rope 48 extend up from the bucket 40 to and around the drums 25 and 27 and are attached thereto as has been pointed out. One end of another rope 48 is attached to the drum 25 and after it has been given several turns about this drum it is carried to one end of the structure 11 and over one or more supporting sheaves such as 50 thence back to the other end of the structure over a supporting sheave 51. From thence it is carried down and under a sheave 52 which is mounted upon a traveling counterweight 52. From the sheave 52 the rope 48 is carried up and over another supporting sheave 53; thence down and under a traveling sheave 52 mounted on the counterweight 52; thence up and over a sup porting sheave 54 near the upper portion of the structure. From this point it is carried back to the drum 27, given several turns around the latter and fastened thereto.

By following the above described arrangement of sheaves, ropes and counterweights, it may be seen that the rope 48 forms in effect a continuation of the bucket-closing ropes 48 and that the counterweight 52 is suspended in a loop of this rope with a two-to-one reduction pulleysystem. 'lhe counterweight 52 not only acts as a tension weight to keep the rope 48 taut, but it may have consider able weight so that it will assist the motor 30 in performing its function of closing and raising the bucket 40. p

The hoisting ropes 47 pass from the bucket 40 up to and around the hoisting drums 26 and 28 and are attached to them. A. rope 47 is attached to the drum 26 and after passing several times around it is led over a supporting sheave 55 at one end of the structure back to another supporting sheave 56 at the other end of the structure. It then extends down and under a sheave 57 which is mounted upon a counterweight 58, back over a supporting sheave 59 and to the drum 28 around which it passes and to which it is attached. Thus the rope 47 forms a continuation of and a connection between the hoisting ropes 47 and the counterweight 58 is suspended in a loop of this connecting rope in such a manner as to tend to keep the rope from sagging and to assist the motor in raising the bucket.

From the above description it may be seen that the hoisting mechanism including its motive power is complete in itself and that therefore there is no necessity for connecting the buckets with a hoisting engine situated away from the trolley. Thus the costly and cumbersome system of ropes commonly in use is entirely done away with. The counterbalancing arrangement which I have invented may be plaeed entirely out of the Zone of operation of the hoisting bucket. One of the great advantages of this arrangement is that the counterweights may be made heavier than the weight of the hoisting bucket and its connected parts. In practice I prefer to make the combined weights of the counterweights 52 and 58 equal to that of the hoisting bucket 40 plus one half of the lead which it is adapted to raise as I find that this arran ement produces the greatest eff: ciency. By this arrangement the motor 30 is required Cir to exert he same amount of power in driving 4. A laterally movable hoisting mechanism the empty bucket down for a load as it exerts comprising a pair of hoisting drums, a counin raising the 'lilled bucket up with its lead, terweight outside the path of movement of but too power required to perform these said mechanism, and a rope connecting the operations is one half of that usually required. counterweight and the two hoisting drums. to raise the load as the counterweights assist A laterally movable hoisting mechthe motor in raising the load. anism comprising a pair of hoisting drums,

B counterbalancing both the closing and a counterweight outside the path of movehoisting ropes of the bucket very little power ment of said mechanism, and a rope connectis required to lift the load at high speed, and ing the two hoisting drums, said counteras the action of the counterweights is enweight being inaloop in the connecting rope. tirely automatic they do not prevent the movablv movement of the carriage along the track 6. A track, a hoistingmechanism supported thereon, said mechanism compriswhile the hoisting operation is still proceeding. The hoisting trolley need have but mg a p air of hoisting drums, a counterweight near one end of the track, a sheave connected little weight, and the absence of all exwith the counterweight, and arope connecttraneous sheaves and supports for hoisting ing the two hoisting drums, said counterand hauling ropes as well as the elimination weight sheave being in a loop in said conof the usual heavy hoisting engines make necting rope. this system one of great simplicit and one 7. A track, ahoisting mechanism movably which may beinstalled without great expense.

In Fig. 5 another arrangement of the counterweights and their connecting rope system is shown. In this case the counter weight 58 is connected in the same manner as that shown in Fig. 4, but the counterweight 52, which is in a loop of the connecting rope 48, is not given a two-to-one movement and is shown as arranged at the oppo site end of the structure from that at which the weight 58 is placed.

have shown more than one modification of my invention to show that i do not confine myself to an} specific construction or arrangement of parts.

Fl'hat I claim is 1. A hoisting mechanism movably mounted upon a track, a rope extending along the path of movement of the hoisting mechanism, the ends of the rope connected with the hoisting mechanism, and a counterweight in said rope arranged assist said hoisting mechanism in lifting a load.

3. A track, a hoisting mechanism movably supported thereon, a rope extending along the track, the ends of said rope connected with the hoisting mechanism, a counterweight, and a sheave connected with the counterweight, said counterwiisight sheave ber connected with said drums, a coiniterweight near the end of the track, and. a rope connecting the counterweight with the two hoisting drums, said counterweight being in a loop in the connecting rope.

8. A track, a hoisting mechanism movably supported thereon, said mechanism comprising a pair of hoisting drums, a load bearing mem er, ropes or cables connecting the load bearing member with both of the drums, a counterweight near the end of the track, a sheave connected with the counterweight, and a rope connecting the counterweight with the two hoisting drums, said counterweight sheave beingin a loop in the connecting rope.

9. A track, a hoisting mechanism movably supported thereon, said mechanism comprising a pair of hoisting drums and means for actuating the drums, a hoisting bucket, ropes or cables connectingthe bucket with both of the drums, counterweight near the end of the track, and a rope system connecting the counterweight with the hoisting (ll'UD'lS, said rope system being so arranged that the lateral movement of the hoisting mechanism does not affect the position of the counterweight.

being supported by the rope and arranged to 10. A track, a hoisting mechanism movassist said hoisting nechanism in lifting a ably supported thereon, said mechanism load.

I). it track, a hoisting mechanism movably supported thereon, said mechanism com prising a hoisting drum, a rope extending along the track, the ends of said rope connected with the hoisting drum, a counterweight for assisting said hoisting mechanism in lifting load, and a sheave connected with the counterweight, said counterweight sheave comprising a pair of hoisting drums and means for actuating the drums, a hoisting bucket, ropes or cables connecting the bucket with both of the drums, a counterweight near the end of the track, a rope system connech ing the counterweight with the hoisting mechanism, and means for moving the hoist ing mechanism along the track, system being so arranged that the lateral movement of the hoisting mechanism does not aflect the position of the counterweight,

11. A track, a hoisting mechanism mo wably supported thereon,

being supported by the rope and so arral'iged that the lateral movement ol' the hoisting mechanism does not allect the position of the counterweight. said mechanism the rope all of the drums, two counterweights near the end of the track, and a rope system con necting one of the counterweights with one pair of said drums, countercomprising a pair of hoisting drums and a motor for actuating the drums, a hoisting bucket, ropes or cables connecting the bucket with both of the drums, a counterweight near the end of the track, a rope system connecting the counterweight with the hoisting drums, and an independent motor for moving the hoisting mechanism along the track, the rope system being so arranged that the lateral movement of the hoisting mechanism does not affect the position of the counterweight.

12. A track, a hoisting ably supported thereon,

and the other weight with the other pair of said drums, said rope system being so arranged that the lateral movement of the hoisting mechanism does not (fleet the position of the counterweights.

16. A track, a hoisting mechanism movably supported thereon, said mechanism comprising two pairs of drums and a motor for actuating the drums; a hoisting bucket, ropes or cables connecting the bucket with all of the drums, a counterweight near the end of the track, a sheave on said counterweight, a rope passing under said counterweight sheave and connected with each of one pair of drums, a second counterweight near the end of the track, a sheave on said second counterweight, and an independent rope passing under the sheave on said second counterweight and connected with each of the other pair of drums.

17. A track, a hoisting mechanism movably supported thereon, said mechanism comprising two pairs of hoisting drums, a motor, and intermediate mechanism connecting said motor with said drums; a hoisting bucket, ropes or cables connecting the bucket with ill of the drums, a counterweight near the end of the track, a sheave on said counterweight, a rope passing under said counterweight sheave and connected with each of one pair of drums, a second counterweight near the end of the track, a sheave on said second counterweight, an independent rope passing under the sheave on said second counterweight and connected with each of the other pair of drums, supporting sheaves for both of said connecting ropes, and an independent motor and worm and gear mechanism on the hoisting mechanism for moving the hoisting mechanism along the track, said ropes and sheaves being so arranged that the lateral movement of the hoisting mechanism does not aiiect the position of the counterweights.

18. A track, a hoisting mechanism movably supported thereon, said mechanism comprising two pairs of hoisting drums, a motor, and intermediate mechanism connecting said motor with said drums, said mechanism being so arranged that one pair of drums may be rotated relatively to the other pair of drums; a hoisting bucket, ropes or cables connecting the bucket with all of the drums, said bucket being opened and closed by the relative rotation of the two airs of drums, a counterweight near the end of the track, a sheave on said counterweight, a rope passing under said counterweight sheave and connected with each of one pair of drums, a second counterweight near the end of the track, a sheave on said second mechanism movsaid mechanism comprising a pair of hoisting drums and a motor for actuating the drums, a hoisting bucket, ropes or cables connecting the bucket with both of the drums, a counterweight heavier than the weight of the bucket, said counterweight being near the end of the track, a sheave on the counterweight, a rope system passing under the counterweight sheave and connecting the counterweight with the hoisting drums, and an independent motor for moving the hoisting mechanism along the track, the rope system being so arranged that the lateral movement of the hoisting mechanism does not affect the position of the counterweight.

13. A track, a hoisting mechanism movably supported thereon, said mechanism comprising a pair of hoisting drums and a motor and intermediate mechanism for connecting said motor and the hoisting drums; a hoisting bucket, ropes or cables connecting the bucket with both of the drums, a counterweight heavier than the weight of the bucket, said counterweight being near the end of the track, a sheave on the counterweight, a rope system passing under the counterweight sheave and connecting the counterweight with the hoisting drums, and an independent motor and a worm and gear mechanism for moving the hoisting mechanism along the track, the rope system being so arranger that the lateral movement of the hoisting mechanism does not aiiect the position of the counterweight.

14. A laterally movable hoisting mechanism comprising two pairs of drums and a motor for actuating the drums, ahoisting bucket, ropes or cables connecting the bucket with all of the drums, a counterweight outside the path of movement of said mechanism, a lexible connection between the counterweight and one pair of said drums, a second counterweight outside the path of movement of the hoisting mechanism and a flexible connection between said second counterweight and the other pair of said drums.

15. A track, a hoisting mechanism movably supported thereon, said mechanism comprising two pairs of drums and a motor for actuating the drums; a hoisting bucket, ropes or cables connecting the bucket with counterweight and connected with each of hoisting mechanism does not afi' the other pair of drums, supporting sheaves tion of the counterweights. for both of said connecting ropes, the comn testimony whereof I have signed my hined weight of the two counterweights bename to this specification in the presence of a ing greater than that of the hoisting bucket; -two subscribing witnesses.

and an independent motor and worm and in T gear mechanism on the hoisting mechanism OHRISHAA HARTW for moving the hoisting mechanism along l/Vitnesses:

ERNEST W. MAnsHALL, ELLA TUoH.

ect the posi the track, said ropes and sheaves being so 10 arranged that the lateral movement of the 

